Today I started getting this pop-up from the Forum asking me if I would allow notifications. OK, something new, I'll try it. So I clicked Allow. When I am looking at a list of threads, I typically right-click to open in a new tab, or new window (Chrome) so I can easily go back to the list. Now when I do that, the new window or tab starts to load then immediately closes.

I do not see anything in my list of extensions. Does anyone know what this thing is and how to disable it?